12.The teacher has devoted himself to _______ his students out of trouble.(  )
A.helpingB.helpC.helpsD.helped

分析 這位老師致力于幫助他的學(xué)生擺脫困難.

解答 答案是A.本題考查動(dòng)名詞的用法;題干中關(guān)鍵詞devote(致力于)常常與介詞to連用,構(gòu)成devote…to致力于…,投入到…,介詞to后面需要的是動(dòng)名詞做賓語(yǔ),故選A.

點(diǎn)評(píng) 首先判斷選項(xiàng)中的動(dòng)詞在句中是以謂語(yǔ)還是非謂語(yǔ)形式出現(xiàn),然后根據(jù)選項(xiàng)在句中的功能結(jié)合非謂語(yǔ)的基本用法做出合理的判斷.要關(guān)注常見非謂語(yǔ)動(dòng)詞的搭配.

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